North Korea launched 4 ballistic missiles in the sea of Japan

North Korea launched four ballistic missiles in the early hours of Monday morning, the leader of Japan described the shots as "extremely dangerous action."

Military authorities of South Korea, Japan and the United States has confirmed the launch of four shells that covered almost 1,000 kilometres (620 miles) in the sea of Japan, also known as the East China sea. One U.S. official said it was medium-range missiles.

Speaking before Japan's Parliament on Monday, Abe said that the launch is a clear violation of the resolutions of the UN Security Council. According to experts, this move was almost certainly in response to joint military exercises between South Korea and the United States, which Pyongyang views as preparation to invade.

The launch took place in the province's Do North Korea. The representative of South Korea's joint chiefs of staff said that the rocket flew 260 kilometers (162 miles). Acting President of South Korea Hwang Kyo Ahn strongly condemned North Korea's actions. "This is a direct challenge to the international community and a gross violation," he said.

The US state Department said that "is willing to use the full range of possibilities at our disposal against this growing threat." The US and South Korea conduct annual military exercises that are defensive in nature. Military exercises began March 1 and will last until April 30.

This is not the first time North Korea launched several missiles at this distance. In September 2016, North Korea launched three ballistic missiles of about 1000 kilometers from the earth in the field of air defense identification zone of Japan, causing a strong reaction from the country.